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Botanical atlas

Ox Knee

Achyranthes bidentata

Ox knee takes its name, and its Chinese name Niu Xi, from the swollen, knobby nodes along its stem that early herbalists thought resembled the bent knee joint of an ox. For centuries in Chinese herbalism, the root has been dug, dried, and simmered into decoctions meant to strengthen the tendons and bones and to ease stiffness and aching that settles into the low back and knees. Herbalists traditionally valued it as a herb that moves blood and guides other remedies downward through the body toward the legs, which is why it so often appears in formulas built around the lower half of the body. It has also long held a place in traditional women's health practices, prized for its ability to encourage healthy circulation.

In tradition.

Ox knee takes its name, and its Chinese name Niu Xi, from the swollen, knobby nodes along its stem that early herbalists thought resembled the bent knee joint of an ox. For centuries in Chinese herbalism, the root has been dug, dried, and simmered into decoctions meant to strengthen the tendons and bones and to ease stiffness and aching that settles into the low back and knees. Herbalists traditionally valued it as a herb that moves blood and guides other remedies downward through the body toward the legs, which is why it so often appears in formulas built around the lower half of the body. It has also long held a place in traditional women's health practices, prized for its ability to encourage healthy circulation.

Traditional preparations.

Traditional Root Decoction

A simple simmered preparation traditionally used to support healthy circulation and a sense of ease in the lower back and knees.

Traditionally, 3 to 9 grams of dried sliced ox knee root is simmered gently in 2 cups of water for 20 to 30 minutes, then strained and sipped warm. In traditional practice this root is rarely used alone, but combined thoughtfully with other herbs suited to the individual.

Safety.

Ox knee root is traditionally avoided in pregnancy, since its blood-moving action was believed to raise miscarriage risk, and also avoided with heavy menstrual bleeding. Use caution if you take blood thinners like warfarin, since it may add to bleeding risk.

Meet the plant itself.

Our sister app HerbLens identifies ox knee from a photo and keeps its full botanical portrait: growing guide, harvest notes, and look-alike warnings.

View on HerbLens
Make it personal.

Ask HerbSense how ox knee is traditionally used and what to know before trying anything at home.

Ask about Ox Knee

HerbSense shares traditional herbal knowledge for education, not diagnosis or treatment. Herbs can interact with medicines and conditions. Speak with your doctor before acting on anything here, and seek care promptly for anything severe, sudden, or worsening.